TWI404563B - Moving granular bed and gas guiding system thereof - Google Patents

Abstract

A moving granular bed includes a filter granule channel, an inlet unit of gas, an outlet unit of gas, a first detecting unit and a feedback control unit. The inlet unit of gas is disposed at one side of the filter granule channel, and the dirty gas is fed into the filter granule channel through the inlet unit of gas. The inlet unit of gas has a first flow-guiding plate. The outlet unit of gas is disposed at the other side of the filter granule channel. The first detecting unit detects the gas velocity at the inlet unit of gas site. The feedback control unit is electrically connected with the first detecting unit, and controls the angle of the first flow-guiding plate and flow rate of filter granules according to a detecting result of the first detecting unit. A gas guiding system used in the moving granular bed is also disclosed. The moving granular bed and gas guiding system can make the dirty gas have different velocity or distribution while passing through the filter granule channel so as to improve the usage of the filter granules.

Description

Mobile particle bed and its gas guiding system

This invention relates to a mobile granular bed.

Particulate contaminants, gaseous contaminants acid _{(HCl, SO 2, NO x} ) and organic pollutants industry common air pollution emissions, if not properly after the treatment will be discharged to the environment of live human Eco The environment has had a tremendous impact. Among them, the granular material control technology which has been developed for many years and can simultaneously remove fly ash and sulfur dioxide at high temperature (>400 ° C) is a granular bed filter. In general, filtration of the granular bed can be carried out in four reactor types: (1) fixed bed, (2) intermittent moving bed, (3) continuous moving bed, and (4) mobile particle bed. Among them, the mobile granular bed, also known as fluidized bed, has been widely used in various industries, including physical and chemical applications, and has the advantage of simultaneously removing its pollutants, so it is incinerated. The purification of complex flue gases produced in the process has considerable potential for development.

Please refer to FIG. 1 , which is a schematic diagram of a conventional mobile particle bed. The conventional mobile type granular bed 1 has a filter material flow path 11, an air intake unit 12, and an air outlet unit 13. The filter medium 111 is filled into the filter material flow path 11 by the introduction port 112 at a slow speed, and is moved to the outside of the filter material flow path 11 by the discharge port 113. The gas to be filtered is sent from the air intake unit 12 to one side of the filter material flow path 11, wherein the dust and contaminants in the gas to be filtered are absorbed by the filter material 111, and the filter medium 111 is moved from top to bottom at a slow speed. It moves until the filter medium 111 is discharged by the discharge port 113. The filtered clean gas will flow from the other side of the filter material flow path 11 to the air outlet unit 13, and will be discharged to the outside by the air outlet unit 13.

However, in the conventional mobile type granular bed 1, when the gas to be filtered enters from the pipeline of the intake unit 12, the wind speed distribution thereof exhibits a peak distribution, and the area in the middle of the pipeline of the intake unit 12 is faster, and The two areas of the pipeline are slower due to the influence of the side wall effect. As a result, since the effective distribution and control of the wind speed distribution cannot be achieved, the filtration rate of the dust of the filter material 111 cannot be optimized, and even the clean filter material 111 that does not block the dust directly flows out of the filter material flow path 11 to cause the filter material. 111 reduced usage.

Therefore, how to provide a mobile particle bed, which can make the gas to be filtered more evenly distributed into the filter material flow channel to improve the utilization rate of the filter material has become one of the important topics.

In view of the above problems, an object of the present invention is to provide a mobile particle bed and a gas guiding system thereof, which can have different wind speed or air volume distribution to enter the filter material flow channel when entering the filter material flow channel to enhance the filter material. Usage rate.

To achieve the above object, a mobile particle bed according to the present invention comprises a filter material flow path, an air intake unit, an air outlet unit, a first measurement unit and a feedback control unit. The air intake unit is disposed on one side of the filter material flow passage, and a gas to be filtered enters the filter material flow passage from the air intake unit, and the air intake unit has a first deflector. The air outlet unit is disposed on one side of the filter material flow path. The first measuring unit measures the gas velocity at the air intake unit. The feedback control unit is electrically connected to the first measurement unit, and controls the angle of the first baffle according to the measurement result of the first measurement unit.

In order to achieve the above object, a gas guiding system according to the present invention is at least partially disposed between a filter material flow path and an air inlet port, and a gas to be filtered enters the filter material flow path from the air inlet port, and the gas guiding system The first measuring plate is disposed between the filter material flow channel and the air inlet, and the first measuring unit measures the gas of the gas to be filtered. The speed and feedback control unit is electrically connected to the first measuring unit, and controls the angle of the first baffle according to the measurement result of the first measuring unit.

In an embodiment of the invention, the movable particle bed further comprises a second baffle and a third baffle, the baffles are disposed on the air intake unit, the second baffle and the third diversion The plates each have a horizontal angle of between 10 and 50 degrees.

In one embodiment of the present invention, the gas guiding system further includes a second baffle and a third baffle disposed between the filter channel and the inlet, and the second diversion The plate and the third baffle have a horizontal angle of between 10 and 50, respectively.

In an embodiment of the invention, the first baffle has a horizontal angle of between 0° and 50°.

In an embodiment of the invention, the length of the first baffle, the second baffle or the third baffle is between 10 mm and 200 mm.

In an embodiment of the invention, the feedback control unit controls the angle of the second baffle or the third baffle according to the measurement result of the first measuring unit.

In an embodiment of the invention, the mobile particle bed further comprises a second measuring unit that measures the gas velocity at the outlet unit.

In an embodiment of the invention, the gas guiding system further comprises a second measuring unit disposed between an air outlet and the filter material flow path.

In an embodiment of the invention, the feedback control unit controls the angle of the first baffle according to the measurement results of the first measurement unit and the second measurement unit.

According to the above, a mobile particle bed and a gas guiding system thereof according to the present invention are configured to adjust at least one adjustable horizontal angle baffle to adjust the flow rate to be filtered by the air inlet to the filter material flow path. The amount of gas and/or wind speed distribution to increase the utilization rate of the filter media. In addition, the first measuring unit can measure the wind speed and the air volume of the gas sent from the air inlet to the filter material flow channel, and instantly know the flow rate or the wind speed distribution of the gas to be filtered to determine whether the gas to be filtered is preset. The air volume distribution enters the filter material flow channel, and the feedback control unit is connected with the first measurement unit and the baffle, and the feedback control unit can control the level of the baffle according to the measurement result measured by the first measurement unit. The angle is so that the gas can be distributed according to the preset air volume to enter the filter material flow channel, which ensures the efficiency and stability of the gas filtration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mobile particle bed and a gas guiding system thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

Please refer to FIG. 2, which is a schematic diagram of a mobile particle bed in accordance with a preferred embodiment of the present invention. The movable particle bed 2 of the present embodiment includes a filter material flow path 21, an air intake unit 22, an air outlet unit 23, a first measurement unit 24, and a feedback control unit 25. The mobile particle bed 2 of the present embodiment is used for removing fly ash, dust, pollutants and/or hydrogen sulfide (H ₂ S), sulfur oxides (SO _X ), nitrogen oxides (NO _X ), hydrogen chloride (HCl) in the gas. ), alkaloids or ammonia, or particulate matter in recycled gas.

The filter material flow path 21 is filled with a filter medium 211 as a path through which the filter medium 211 flows or moves. In the filter channel 21, the filter material of different materials may be selected according to different gases to be filtered. The filter material 211 of the embodiment is made of quartz sand, and the material thereof is 95% cerium oxide and 5% other components. The particle size is about 2~4mm. The filter channel 21 includes an inlet 212, a row of outlets 213, a plurality of inlet vanes 214, and a plurality of outlet vanes 215. The clean filter medium 211 is filled into the filter material flow path 21 via the introduction port 212, and the flow rate of the filter medium 211 is adjusted in accordance with the wind speed of the air intake unit 22 and the concentration of the pollutant. When the concentration of the pollutants or the inlet wind speed is large, the flow rate of the filter medium 211 is adjusted accordingly, so that the pollutant carrying capacity of the filter medium 211 does not exceed the load; when the pollutant concentration and the inlet wind speed are small, The flow rate of the filter medium 211 is then adjusted to be small to avoid causing the clean filter material 211 to directly carry out the discharge port 213 without carrying contaminants. The discharge port 213 uniformly discharges the filter medium 211 which has absorbed impurities, dust or contaminants for collection and even recovery.

The air inlet vanes 214 are disposed on one side of the filter material flow path 21, and the air outlet vanes 215 are disposed on the other side of the filter material flow path 21, that is, the air outlet vanes 215 and the air inlet vanes 214 relative settings. The blade shapes of the air inlet vanes 214 and the air outlet vanes 215 are substantially similar to a hundred-page structure, and an air outlet vane 215 and an air inlet vane 214 are correspondingly disposed to form a funnel-like structure. In this way, the filter material 211 can be restricted from moving slowly within the filter material flow path 21 to form an effective over-rate curtain.

The air intake unit 22 is disposed on one side of the filter material flow path 21 having the air intake vanes 214. The air intake unit 22 has an air inlet 221 and a first air deflector 222. The first baffle 222 is disposed corresponding to the intake port 221 and is disposed between the intake port 221 and the filter material flow path 21 . The gas to be filtered is sent from the outside to the air intake unit 22 via the air inlet 221, and by adjusting the horizontal angle of the first baffle 222, the gas to be filtered which is transported to the filter channel 21 can be uniformly distributed to increase the gas. The quality and efficiency of filtration. The width of the air inlet 221 of this embodiment is about 110 mm. The first baffle 22 has a horizontal angle of 0° to 50°, and the first baffle 22 has a length of 10 mm to 250 mm. The horizontal angle of the first baffle 22 of the embodiment is 0. For example, the length of the first deflector 22 is exemplified by 230 mm. It should be noted that the definition of the horizontal angle can also define the main flow direction of the middle filter medium 211 of the filter material flow passage 21 as a horizontal angle of 90°, or define the main intake direction of the air inlet 221 as a horizontal angle of 0°. .

The air outlet unit 23 is disposed on one side of the filter material flow path 21 having the air outlet vanes 215. The air outlet unit 23 has an air outlet 231, and the air outlet unit 23 collects the filtered gas flowing out of the filter material flow path 21.

The first measuring unit 24 has a plurality of first sensors 241 for measuring the gas velocity at the air intake unit 22, that is, measuring the velocity of the gas to be filtered before flowing from the air intake unit 22 to the filter material flow passage 21. And traffic distribution. In this embodiment, by providing a plurality of first sensors 241 between the air intake unit 22 and the filter material flow path 21, the gas speeds and flows read by the first sensors 241 are transmitted to the feedback control unit 25, It is determined whether the gas to be filtered flows evenly to the filter material flow path 21. The position and the number of the first sensors 241 can be set differently according to the design and the density of the first sensors 241 can be adjusted. In this embodiment, the first inductors 241 are arranged substantially in a straight line as an example.

The feedback control unit 25 is electrically connected to the first measurement unit 24, and the feedback control unit 25 adjusts the control of the first baffle 22 manually or manually according to the measurement result of the first measurement unit 24. Horizontal angle. By adjusting the horizontal angle of the first baffle 22, it is ensured that the gas to be filtered flowing into the filter channel 21 can be evenly distributed, thereby increasing the utilization rate of the filter. When the horizontal angle adjustment of the first baffle 22 is performed, the first baffle 22 may be periodically oscillated to dynamically adjust the air volume or wind speed distribution of the gas to be filtered into the filter material flow path 21.

Since the first measuring unit 24 can perform on-line measurement in real time, in addition to the air volume and the flow rate, preliminary concentration analysis of the contaminant or dust can be performed to allow the feedback control unit 25 to measure the result according to the first measuring unit 24. In order to adjust the horizontal angle of the first baffle 22 in real time, the usage rate of the filter medium 211 is further improved.

It should be noted that by adjusting the horizontal angle of the first baffle 22, in addition to the relatively even distribution of the gas to be filtered, the gas to be filtered can be deliberately distributed to a predetermined flow rate. As shown in FIG. 2, if the filter medium 211 located in the vicinity of the second filter surface S2 of the filter material flow path 21 adsorbs more contaminants than the filter medium 211 located near the first filter surface S1, the first filter surface S1 is panned. Refers to the filtering surface located in the upper half of the filter material flow path 21; the second filtering surface S2 generally refers to the filtering surface located in the lower half of the filter material flow path 21. At this time, the horizontal angle of the first baffle 22 can be adjusted in time so that the air volume and the flow rate entering the filter material flow path 21 via the first filter surface S1 are greater than the flow rate entering the filter material flow path 21 via the second filter surface S2. The air volume and the flow rate are used to increase the usage rate of the filter medium 211, thereby reducing the clean or still high-adsorption filter medium 211, and discharging the filter medium flow path 21.

Please refer to FIG. 3, which is a schematic diagram of another aspect of the mobile particle bed of the present invention. The air intake unit 22a may further include a second baffle 223 and a third baffle 224. The second baffle 223 and the third baffle 224 are also disposed corresponding to the air inlet 221, and are also disposed at the air inlet. Between port 221 and filter channel 21 . The positions of the first baffle 221, the second baffle 223, and the third baffle 224 may be disposed at different positions depending on the design. In this embodiment, the second baffle 223 and the third baffle 224 are placed on the upper and lower sides of the first baffle 222 as an example. In addition, the horizontal angles θ1 and θ2 of the second baffle 223 and the third baffle 224 of the present embodiment are between 10° and 50°. The length of the second baffle 223 and the third baffle 224 are between 10 mm and 250 mm. However, the horizontal angle between the first baffle 222, the second baffle 223, and the third baffle 224 may be different depending on the position of the setting, or may be adjusted according to the influence of the gas flow distribution. length. The horizontal included angles θ1 and θ2 of the second deflector 223 and the third deflector 224 of the present embodiment are exemplified by 30°, and the lengths of the two are 170 mm. Furthermore, the materials of the first baffle 222, the second baffle 223, and/or the third baffle 224 of the embodiment may be antistatic materials, and the electrostatic adhesion effect may be avoided by contact with dust.

In addition, the mobile particle bed 2a of the embodiment may further include a second measuring unit 26, the second measuring unit 26 is disposed opposite to the first measuring unit 24, and the second measuring unit 26 has a plurality of second sensors. 261. The second measuring unit 26 measures the gas velocity or the air volume distribution at the gas unit 23. That is, the second measuring unit 26 measures the velocity and distribution of the filtered gas flowing from the filter material flow path 21 to the air outlet unit 23. In this embodiment, a plurality of second inductors 261 are disposed between the air outlet unit 23 and the filter material flow path 21, and the gas velocity and flow rate distribution read by the second inductors 261 are transmitted to the feedback control unit 25, It is determined whether the filtered gas is evenly distributed or flows out of the filter material flow path 21 in accordance with the set flow distribution. The position and the number of the second sensors 261 can be set differently according to the design and the density of the second inductors 261 can be adjusted. In addition, the second measuring unit 26 can also measure the cleanliness of the filtered gas, so that the horizontal angle of the baffles 222, 223, 224 or the flow rate of the filter material can be controlled in real time.

In this embodiment, the feedback control unit 25 is electrically connected to the first measurement unit 24 and the second measurement unit 26, and is controlled according to the measurement results of the first measurement unit 24 and the second measurement unit 26. The horizontal angle between the baffle 222, the second baffle 223 and the third baffle 224 even controls the time period and horizontal angle at which the baffles are oscillated. The feedback control unit 25 can simultaneously control or individually control the horizontal angles of the first baffle 222, the second baffle 223, and the third baffle 224, and can control the first guide electrically or manually. The flow plate 222, the second baffle 223, and the third baffle 224.

In addition, the present invention also discloses a gas guiding system for a moving particle bed. Here, the gas guiding system is a first deflector, a first measuring unit, and a feedback control unit in the air intake unit including at least the mobile particle bed in the above embodiment.

Referring to FIG. 4 , at least a portion of the gas guiding system G is disposed between a filter material flow path 21 and an air inlet 221 . For example, the first baffle 222 is disposed between the filter material flow path 21 and the air inlet 221 . The gas system to be filtered enters the filter material flow path 21 from the air inlet 221 . The same component names as in the foregoing mobile particle bed embodiment are the same technical features, and are not described herein again.

The first measuring unit 24 is disposed between the first baffle 222 and the filter material flow path 21 to measure the gas velocity of the gas to be filtered. The feedback control unit 25 is electrically coupled to the first measurement unit 24 and controls the angle of the first baffle 222 according to the measurement result of the first measurement unit 24. The same component names as in the foregoing mobile particle bed embodiment are the same technical features, and are not described herein again.

As shown in FIG. 5, the gas guiding system G further includes a second baffle 223 and/or a third baffle 224. The first measuring unit 24 can be disposed on the second baffle 223 and the filter material flow. Between the lanes 21, or between the third deflector 224 and the filter material flow passage 21. The same component names as in the foregoing mobile particle bed embodiment are the same technical features, and are not described herein again.

In addition, the gas guiding system G further includes a second measuring unit 26 disposed between an air outlet 231 and the filter material flow path 21. The same component names in the second measurement unit 26 and the foregoing mobile particle bed embodiment are the same technical features, and are not described herein again.

In summary, a mobile particle bed and a gas guiding system thereof according to the present invention are configured to adjust at least one adjustable horizontal angle baffle to adjust the flow rate to be filtered by the air inlet to the filter material flow path. The air volume or wind speed distribution of the gas to increase the utilization rate of the filter material. In addition, the first measuring unit can measure the wind speed and the air volume of the gas sent from the air inlet to the filter material flow channel, and instantly know the flow rate or the wind speed distribution of the gas to be filtered to determine whether the gas to be filtered is preset. The air volume distribution enters the filter material flow channel, and the feedback control unit is connected with the first measurement unit and the baffle, and the feedback control unit can control the level of the baffle according to the measurement result measured by the first measurement unit. The angle is so that the gas can be distributed according to the preset air volume to enter the filter material flow channel, which ensures the efficiency and stability of the gas filtration.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1, 2, 2a‧‧‧ mobile granular bed

11, 21‧‧‧ particle bed, filter channel

111, 211‧‧‧ filter media

112, 212‧‧‧ import port

113, 213‧‧‧Export

12, 22, 22a‧‧‧ intake unit

13, 23, 23a‧‧‧ gas outlet unit

214‧‧‧Air intake panel

215‧‧‧Exhaust leaf

221‧‧‧air inlet

222‧‧‧First deflector

223‧‧‧Second deflector

224‧‧‧ Third deflector

231‧‧‧ air outlet

24‧‧‧First measuring unit

241. . . First sensor

25. . . Feedback control unit

26. . . Second measuring unit

261. . . Second sensor

G. . . Gas guidance system

S1. . . First filter surface

S2. . . Second filter surface

Θ1, θ2. . . Horizontal angle

Figure 1 is a schematic cross-sectional view of a conventional mobile particle bed; 2 is a schematic cross-sectional view of a moving particle bed in accordance with a preferred embodiment of the present invention; FIG. 3 is a cross-sectional view of another embodiment of a moving particle bed in accordance with a preferred embodiment of the present invention; A schematic cross-sectional view of a gas guiding system of a preferred embodiment; and FIG. 5 is another cross-sectional view of a gas guiding system in accordance with a preferred embodiment of the present invention.

2. . . Mobile granular bed

twenty one. . . Particle bed

211. . . Filter material

212. . . Guide

213. . . Discharge

214. . . Intake leaf

215. . . Ventilation leaf

twenty two. . . Air intake unit

221. . . Air inlet

222. . . First deflector

twenty three. . . Exhaust unit

231. . . Air outlet

twenty four. . . First measuring unit

241. . . First sensor

25. . . Feedback control unit

S1. . . First filter surface

S2. . . Second filter surface

Claims (17)

A mobile particle bed comprises: a filter material flow channel; an air intake unit disposed on one side of the filter material flow channel, a gas to be filtered enters the filter material flow channel by the air intake unit, the air intake unit has a first a deflector and an air inlet, and the first deflector is disposed corresponding to the air inlet; an air outlet unit is disposed on the other side of the filter flow channel; a first measuring unit measures the a gas velocity at the gas unit; and a feedback control unit electrically coupled to the first measurement unit and controlling a horizontal angle of the first deflector according to the measurement result of the first measurement unit; wherein The intake direction of the intake port is defined as a horizontal angle of 0°, and the horizontal angle of the first baffle is between 0° and 50°. The mobile particle bed of claim 1, wherein the air intake unit further comprises: a second baffle having a horizontal angle of between 10° and 50°. The mobile particle bed of claim 1, wherein the air intake unit further comprises: a third baffle having a horizontal angle of between 10° and 50°. The mobile particle bed of claim 1, wherein the first baffle, the second baffle or the third baffle has a length of between 10 mm and 250 mm. The mobile granular bed according to claim 1, further comprising: a filter material filled in the filter material flow channel. The mobile particle bed of claim 2, wherein the feedback control unit controls the second baffle and/or the third baffle according to the measurement result of the first measuring unit. Horizontal angle. The mobile particle bed according to claim 1, further comprising: a second measuring unit for measuring the gas velocity at the gas outlet unit. The mobile particle bed of claim 7, wherein the feedback control unit controls the horizontal angle of the first baffle according to the measurement results of the first measurement unit and the second measurement unit. A gas guiding system for a moving particle bed is at least partially disposed between a filter material flow channel and an air inlet, and a gas to be filtered enters the filter material flow channel from the air inlet, the gas guiding system comprises: a first baffle disposed between the filter material flow path and the air inlet, and the first baffle is disposed corresponding to the air inlet; a first measuring unit for measuring the gas holding the filtered gas And a feedback control unit electrically coupled to the first measurement unit and controlling an angle of the first baffle according to the measurement result of the first measurement unit; wherein the intake port is advanced The gas direction is defined as a horizontal angle of 0°, and the horizontal angle of the first baffle is between 0° and 50°. The gas guiding system of claim 9, wherein the first measuring unit is disposed on the first deflector and the filter channel between. The gas guiding system of claim 9, wherein the feedback control unit controls the horizontal angle of the first baffle according to the measurement results of the first measuring unit and the second measuring unit. The gas guiding system of claim 9, further comprising: a second baffle having a horizontal angle of between 10° and 50°. The gas guiding system of claim 9, further comprising: a third baffle having a horizontal angle of between 10° and 50°. The gas guiding system of claim 9, wherein the first baffle, the second baffle or the third baffle has a length of between 10 mm and 250 mm. The gas guiding system of claim 12 or 13, wherein the first measuring unit is disposed between the second deflector and the filter material flow path, or is disposed on the third deflector Between the filter channels. The gas guiding system of claim 12 or 13, wherein the feedback control unit controls the second baffle and/or the third baffle according to the measurement result of the first measuring unit Horizontal angle. The gas guiding system of claim 9, further comprising: a second measuring unit disposed between an air outlet and the filter material flow path.